Home / 1,242,438.12-1,710,333.36-919,539.72

Finding the Fourth Proportional to 1,242,438.12, 1,710,333.36 and 919,539.72

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Solution

The fourth proportional to 1,242,438.12, 1,710,333.36 and 919,539.72 is: 1,265,833.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,438.12 : 1,710,333.36 = 919,539.72 : x
  2. Step 2: Convert to fraction form
    1,242,438.12/1,710,333.36 = 919,539.72/x
  3. Step 3: Cross multiply
    1,242,438.12x = 1,710,333.36 × 919,539.72
  4. Step 4: Simplify right side
    1,242,438.12x = 1,572,719,458,961.06
  5. Step 5: Solve for x
    x = 1,572,719,458,961.06/1,242,438.12
  6. Step 6: Final answer
    x = 1,265,833.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.